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How to calculate KVs?
Old timer new to brushless, I just bought a EZrun set up (13T?) the sticker reads 3000KV. What is the formula for figuring this out? Thanks for any help.
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It's actually more of a 'measurement' than a 'calculation'...
Roughly speaking, it is the rating in terms of RPM per volt... (Example: 3000 KV at 7 volts = 28,000 RPM...) OF course, that does not factor in 'load', or internal resistance of batteries, etc., etc. -- you can't even compare motors from different brands because different manufacturers mesure KV differently... Correction: 3000 x 7 - 21,000.... Thanks to 'cannon' for the correction. I gotta pay more attention to my own typing.... :blush: |
Hey thanks tfrahm, at least I have a ballpark at what I am dealing with. Nice to know that the manufacterers after all these years still cannot standardize(?) a motor measurement/dyno readings. Guess it helps prevent direct comparisons of each others product!?:p
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Originally Posted by tfrahm
(Post 4789117)
It's actually more of a 'measurement' than a 'calculation'...
Roughly speaking, it is the rating in terms of RPM per volt... (Example: 3000 KV at 7 volts = 28,000 RPM...) OF course, that does not factor in 'load', or internal resistance of batteries, etc., etc. -- you can't even compare motors from different brands because different manufacturers mesure KV differently... Last time I looked at mathematics 7 x 3000 equalled 21000 :D |
Originally Posted by cannon
(Post 4789936)
Last time I looked at mathematics 7 x 3000 equalled 21000 :D
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